CN210568923U - Novel air purifier - Google Patents

Novel air purifier Download PDF

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Publication number
CN210568923U
CN210568923U CN201921170176.6U CN201921170176U CN210568923U CN 210568923 U CN210568923 U CN 210568923U CN 201921170176 U CN201921170176 U CN 201921170176U CN 210568923 U CN210568923 U CN 210568923U
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China
Prior art keywords
end plate
wind wheel
outer edge
wind
angle
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CN201921170176.6U
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Chinese (zh)
Inventor
钟思
李煌阳
林国强
饶文涛
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Xiamen Weike Health Industry Co ltd
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Xiamen Weike Health Industry Co ltd
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Priority to CN201921170176.6U priority Critical patent/CN210568923U/en
Priority to US16/589,035 priority patent/US20210025606A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/80—Self-contained air purifiers

Abstract

The utility model discloses a novel air purifier, which comprises a shell with an air duct, and a filter element, a wind wheel and a motor which are arranged in sequence from an air inlet to an air outlet of the air duct; the wind wheel comprises a rear end plate matched with a driving shaft of the motor and is in a circle shapeThe fan blades are arranged between the rear end plate and the front end plate at equal intervals; the central opening of the front end plate is provided with an airflow inlet of the wind wheel, and an airflow outlet of the wind wheel is arranged between the outer edge of the front end plate and the outer edge of the rear end plate; setting the outer diameter of the rear end plate 31 to D1, the outer diameter of the front end plate 32 to D2, D2 smaller than D1, and 0.88 < D
Figure 100004_DEST_PATH_IMAGE001
Is less than 0.92. After the structure of the oil adding device is adopted, the utility model discloses a design the external diameter of the front end plate of wind wheel for being less than the external diameter of back end plate to reduce the absolute speed of blade in the air current import region, thereby eliminate the self-loss region of the high velocity air current of wind wheel, reach the purpose of making an uproar of falling under the prerequisite that does not reduce the amount of wind, improved user experience.

Description

Novel air purifier
Technical Field
The utility model relates to an air purification field especially indicates a novel air purifier.
Background
The wind wheel is used as a power source of the air purifier, the quality of the structural design of the wind wheel is directly related to the quality of the aerodynamic performance, and the main parameters of the aerodynamic performance are air volume and noise. The larger the air quantity is, the smaller the noise is, and the design target of the wind wheel structure is. At present, most of household air purifiers commonly adopt a volute-free centrifugal wind wheel air duct system which comprises an air duct and a wind wheel, the air duct system is characterized in that relatively uniform air outlet and linear air inlet and outlet directions can be realized, and the structural mode meets the design requirements of most of household air purifiers. The outer diameter design of present most wind wheels all is single-stage outer diameter design, and simulation analysis through aerodynamics can discover, and to no spiral case centrifugal wind wheel air duct system, the high-speed air current of wind wheel distributes on the air-out cross-section inhomogeneously, and the air current can produce the high-speed air current of self-loss near being close to the inlet scoop, forms main noise source, and then influences air purifier's user experience. The general way of noise reduction is to reduce the air volume.
In addition, due to the centrifugal action of the wind wheel, airflow has a streaming phenomenon in the air duct, and the air quantity is reduced due to the increase of on-way resistance. Meanwhile, the flow velocity distribution of the centrifugal airflow is uneven, so that the loss of the air volume is aggravated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel air purifier, under the prerequisite that does not reduce the amount of wind, the noise reduction improves user experience.
In order to achieve the above purpose, the solution of the present invention is:
a novel air purifier comprises a shell with an air duct, and a filter element, a wind wheel and a motor which are sequentially arranged along the air inlet to the air outlet of the air duct; the wind wheel comprises a rear end plate matched with a driving shaft of the motor, a circular front end plate and a plurality of fan blades which are arranged between the rear end plate and the front end plate at equal intervals; the central opening of the front end plate is provided with an airflow inlet of the wind wheel, and an airflow outlet of the wind wheel is arranged between the outer edge of the front end plate and the outer edge of the rear end plate; setting the outer diameter of the rear end plate 31 to D1, the outer diameter of the front end plate 32 to D2, D2 smaller than D1, and 0.88 < D
Figure 45598DEST_PATH_IMAGE002
＜0.92。
The outer end of the fan blade is designed in two sections and comprises a first outer edge and a second outer edge, the first outer edge is connected with the outer edge of the rear end plate, the second outer edge is connected with the outer edge of the front end plate, and an arc outer edge is connected between the first outer edge and the second outer edge.
The wind outlet angle of the fan blades is 60-68 degrees, the wind inlet angle of the fan blades is 58-64 degrees, the extension angle of the fan blades is 54-64 degrees, and the number of the fan blades is 9-11; the wind outlet angle of the fan blade is the included angle between the outer edge tangent line of the fan blade and the diameter of the wind wheel passing through the tangent point of the outer edge tangent line, the wind inlet angle is the included angle between the inner edge tangent line of the fan blade and the diameter of the wind wheel passing through the tangent point of the inner edge tangent line, and the extension angle of the fan blade is the included angle between the radius of the wind wheel passing through the inner end of the fan blade and the outer end of the fan blade.
The wind outlet angle of the fan blades is 64 degrees, the wind inlet angle of the fan blades is 62 degrees, the extension angle of the fan blades is 59 degrees, and the number of the fan blades is 9.
In the radial direction of the wind wheel, a cambered surface is arranged between the outer end of the fan blade and the inner end of the wind wheel; in the axial direction of the wind wheel, the fan blades incline towards the outer edge direction of the rear end plate along the airflow inlet, and the inclined plane is a cambered surface.
The middle part of the rear end plate is provided with a flow guide boss protruding towards the direction of the airflow inlet, and a flow guide inclined plane is formed between the outer edge of the flow guide boss and the outer edge of the rear end plate.
And two ribs which clamp the fan blades in opposite directions are formed at the matching part of the rear end plate corresponding to the fan blades in a protruding manner.
The air guide assembly is arranged in the air duct and is positioned between the air outlet and the motor; the guide assembly comprises an outer mounting seat, an inner mounting seat and a plurality of guide vanes which are arranged between the outer mounting seat and the inner mounting seat at equal intervals, the inner ends of the guide vanes are arranged on the periphery of the inner mounting seat, the outer ends of the guide vanes are arranged on the inner side of the outer mounting seat, and the outer mounting seat is arranged on the side wall of the air duct; the flow guide direction of the flow guide vanes is deflected from the outer side of the flow guide assembly to the inner side of the flow guide assembly.
The width of the outer end of each guide vane is 18 mm-22 mm, the width of the inner end of each guide vane is 28 mm-32 mm, and the height of each guide vane is 37 mm-41 mm.
The air inlet angle of the inner end of the guide vane is 60-70 degrees, and the air outlet angle of the inner end of the guide vane is 80-90 degrees; the air inlet angle of the outer end of the guide vane is 60-70 degrees, and the air outlet angle of the outer end of the guide vane is 80-90 degrees; the wind inlet angle of the inner end of the guide vane is an included angle between an inner edge tangent line of the inner end of the guide vane and a rotation axis of the wind wheel, the wind outlet angle of the inner end of the guide vane is an included angle between an outer edge tangent line of the inner end of the guide vane and a vertical plane of the rotation axis of the wind wheel, the wind inlet angle of the outer end of the guide vane is an included angle between an inner edge tangent line of the outer end of the guide vane and the rotation axis of the wind wheel, and the wind outlet angle of the outer end of the guide vane is an included angle between an outer edge tangent line of the outer end.
After the structure of the oil adding device is adopted, the utility model discloses a design the external diameter of the front end plate of wind wheel for being less than the external diameter of back end plate to reduce the absolute speed of blade in the air current import region, thereby eliminate the self-loss region of the high velocity air current of wind wheel, reach the purpose of making an uproar of falling under the prerequisite that does not reduce the amount of wind, improved user experience.
In addition, the design of the wind outlet angle, the wind inlet angle and the extension angle of the fan blades and the number thereof limits the main parameter range and can ensure the working stability of the wind wheel; set up the water conservancy diversion subassembly between the air outlet in wind channel and the motor, realize the effect of drainage, concentrate the air that the wind wheel was thrown away to the middle part of air outlet, avoid the phenomenon of streaming to take place to reduce the loss of the amount of wind, and guarantee that the velocity of flow of air distributes evenly, further promote user experience.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a perspective view of the wind wheel of the present invention;
fig. 3 is a front view of the wind wheel of the present invention;
3 FIG. 34 3 is 3a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3A 3- 3A 3 of 3 FIG. 33 3; 3
Fig. 5 is a perspective view of the flow guide assembly of the present invention;
fig. 6 is a top view of the flow guide assembly of the present invention;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;
fig. 8 is a schematic view of the air flow direction according to the embodiment of the present invention.
The reference numbers illustrate: a housing 1; an air duct 11; an air inlet 12; an air outlet 13; a filter element 2; a wind wheel 3; a rear end plate 31; a flow guide boss 311; a flow-directing ramp 312; ribs 313; a front end plate 32; a fan blade 33; the outer end 33A of the fan blade; the inner end 33B of the fan blade; a first outer edge 331; a second outer edge 332; an outer arc edge 333; a gas flow inlet 34; a gas flow outlet 35; a motor 4; a flow guide component 5; an outer mount 51; an inner mount 52; guide vanes 53; guide vane inner ends 53A; guide vane outer ends 53B.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
Referring to fig. 1 to 8, in order to implement the present invention, a novel air purifier includes a housing 1 having an air duct 11, and a filter element 2, a wind wheel 3 and a motor 4 sequentially disposed along an air inlet 12 to an air outlet 13 of the air duct 11. Under operating condition, motor 4 drives the wind wheel 3 rotatory, the inside air of wind wheel 3 is thrown away by the centrifugation to flow to air outlet 13 along wind channel 11, make the inside of wind wheel 3 form negative pressure zone, the outside air of casing 1 gets into through filter core 2 by air intake 12 in wind channel 11, particulate matter and harmful gas can be adsorbed by filter core 2 in the air, clean air passes through filter core 2 and supplements to the negative pressure zone, again by the centrifugation of wind wheel 3 and throw away, circulate in proper order, thereby realize the circulation purification of air.
Referring to fig. 2 to 4, the wind wheel 3 includes a rear end plate 31 engaged with a driving shaft of the motor 4, a front end plate 32 in a circular ring shape, and a plurality of blades 33 installed between the rear end plate 31 and the front end plate 32 at equal intervals; wherein, the central opening of the front end plate 32 is an airflow inlet 34 of the wind wheel 3, and an airflow outlet 35 of the wind wheel 3 is arranged between the outer edge of the front end plate 32 and the outer edge of the rear end plate 31. Setting the outer diameter of the rear end plate 31 to D1, the outer diameter of the front end plate 32 to D2, D2 smaller than D1, and 0.88 < D
Figure DEST_PATH_IMAGE003
Is less than 0.92. In this example D1 was 148mm and D2 was 136 mm. Because the high-speed airflow of the wind wheel 3 is concentrated in the area of the airflow inlet 34, reducing the outer diameter of the front end plate 32 is equivalent to reducing the outer diameter of the fan blade 33, so that the absolute speed of the fan blade 33 in the area of the airflow inlet 34 is reduced, the self-loss area of the high-speed airflow of the wind wheel 3 is eliminated, and the purpose of noise reduction is achieved.
The outer ends of the fan blades 33 are designed in two sections, and each fan blade comprises a first outer edge 331 and a second outer edge 332, the first outer edge 331 is connected with the outer edge of the rear end plate 31, the second outer edge 332 is connected with the outer edge of the front end plate 32, and an arc outer edge 333 is connected between the first outer edge 331 and the second outer edge 332, so that smooth transition from the first outer edge 331 to the second outer edge 332 is realized.
the method comprises the steps of setting an air outlet angle of a fan blade 33 to be α 1, an air inlet angle of the fan blade 33 to be α 2, an extension angle of the fan blade 33 to be α 03, α 1 to be 60-68 degrees, α 2 to be 58-64 degrees, α 3 to be 54-64 degrees, the number of the fan blades 33 to be 9-11, in the embodiment, α 1 to be 64 degrees, α 2 to be 62 degrees, α 3 to be 59 degrees and the number of the fan blades 33 to be 9, wherein the air outlet angle α 1 of the fan blade 33 is an included angle between an outer edge tangent line of the fan blade 33 and the diameter of a wind wheel 3 passing through the outer edge tangent point of the fan blade, the air inlet angle α 2 is an included angle between an inner edge of the fan blade 33 and the diameter of the wind wheel 3 passing through the inner edge tangent point of the wind wheel, the extension angle of the fan blade is an included angle between the inner end 33B of the wind wheel 3 and the outer end 33A of the fan blade, the problem of the fan blade can be caused by the excessive.
In the radial direction of the wind wheel 3, a cambered surface is arranged between the outer end 33A of the fan blade and the inner end 33B of the fan blade; in the axial direction of the wind wheel 3, the fan blade 33 inclines towards the outer edge direction of the rear end plate 31 along the airflow inlet 34, and the inclined plane is a cambered surface. The fan blade 33 with the shape realizes the guiding of the air flow after entering from the air flow inlet 34, so that the air flow is spiral when flowing out from the air flow outlet 35, the included angle between the air flow and the side wall of the air channel 11 in the radial direction and the axial direction of the air channel 11 is increased, the air flow flows to the side wall of the air channel 11 in an inclined manner, the kinetic energy loss of the air flow is reduced, and the air volume of the air purifier is increased.
The middle part of the rear end plate 31 is provided with a flow guide boss 311 protruding towards the direction of the airflow inlet 34, and a flow guide inclined plane 312 is formed between the outer edge of the flow guide boss 311 and the outer edge of the rear end plate 31, so that when airflow enters the interior of the wind wheel 3 from the airflow inlet 34 and flows towards the rear end plate 31, the airflow is folded to flow towards the airflow outlet 35 under the blocking and guiding of the flow guide boss 311 and the flow guide inclined plane 312, thereby avoiding the impact of the airflow and the rear end plate 31, reducing the kinetic energy loss of the air, and achieving the purposes of reducing noise and improving the air volume.
Two ribs 313 for clamping the fan blade 33 in opposite directions are formed at the matching position of the rear end plate 31 corresponding to the fan blade 33 in a protruding manner so as to fix the fan blade 33 on the rear end plate 31, improve the structural stability and prevent the fan blade 33 from shaking.
The utility model discloses still include as shown in fig. 5 to fig. 7 the diversion subassembly 5 that diversion subassembly 5 installs in wind channel 11 and is located between air outlet 13 and the motor 4. The guide assembly 5 includes an outer mounting seat 51, an inner mounting seat 52, and a plurality of guide vanes 53 installed between the outer mounting seat 51 and the inner mounting seat 52 at equal intervals, wherein an inner end 53A of each guide vane is installed on the periphery of the inner mounting seat 52, an outer end 53B of each guide vane is installed on the inner side of the outer mounting seat 51, and the outer mounting seat 51 is installed on the side wall of the air duct 11. The flow guiding direction of the flow guiding vane 53 is deflected from the outer side of the flow guiding assembly 5 to the inner side of the flow guiding assembly 5. The guide vane 53 with the above shape realizes the guiding of the air after entering from the input end (the lower end in fig. 8) of the guide assembly 5, so that the air is spiral when flowing out from the output end (the upper end in fig. 8) of the guide assembly 5 and is concentrated towards the middle, thereby avoiding the phenomenon of flow bypassing, reducing the loss of air volume and ensuring the uniform distribution of the flow velocity of the air.
The width of the outer end 53B of the guide vane is 18 mm-22 mm, the width of the inner end 53A of the guide vane is 28 mm-32 mm, and the height of the guide vane 53 is 37 mm-41 mm. The air inlet angle of the inner end 53A of the guide vane is 60-70 degrees, and the air outlet angle of the inner end 53A of the guide vane is 80-90 degrees; the air inlet angle of the outer end 53B of the guide vane is 60-70 degrees, and the air outlet angle of the outer end 53B of the guide vane is 80-90 degrees. The air inlet angle of the inner end 53A of the guide vane is an included angle between an inner edge tangent line of the inner end 53A of the guide vane and a rotation axis of the wind wheel 3, the air outlet angle of the inner end 53A of the guide vane is an included angle between an outer edge tangent line of the inner end 53A of the guide vane and a vertical plane of the rotation axis of the wind wheel 3, the air inlet angle of the outer end 53B of the guide vane is an included angle between an inner edge tangent line of the outer end 53B of the guide vane and the rotation axis of the wind wheel 3, and the air outlet angle of the outer end 53B of the guide vane is an included angle between an outer edge tangent line of the outer end 53B.
Referring to fig. 8, in a working state, the motor 4 drives the wind wheel 3 to rotate, air inside the wind wheel 3 is centrifugally thrown out and flows to the air outlet 13 along the wind channel 11, so that a negative pressure region is formed inside the wind wheel 3, air outside the housing 1 enters from the air inlet 12 of the wind channel 11 and passes through the filter element 2, particulate matters and harmful gases in the air are adsorbed by the filter element 2, clean air passes through the filter element 2 and is supplemented to the negative pressure region, and then is centrifugally thrown out by the wind wheel 3, the structural design of the wind wheel 3 reduces the absolute speed of the fan blades 33 in the area of the air inlet 34, namely, a self-loss area of the air flow told by the wind wheel 3 is eliminated, the purpose of noise reduction is achieved, the included angle between the air flow and the side wall of the wind channel 11 in the radial direction and the axial direction of the wind channel 11 is increased, the air flow flows to the spiral flow, the uniform clean air flows out of the air outlet 13 uniformly, so that the air is purified circularly.
Through the structure, the utility model discloses a design the external diameter of the front end plate 32 of wind wheel 3 for being less than the external diameter of back end plate 31 to reduce the blade at the regional absolute speed of airflow inlet 34, thereby eliminate the self-loss region of the high velocity air current of wind wheel 3, reach the purpose of making an uproar of falling under the prerequisite that does not reduce the amount of wind, improved user experience.
In addition, the design of the air outlet angle, the air inlet angle and the extension angle of the fan blades 33 and the number thereof limits the main parameter range, and can ensure the working stability of the wind wheel 3; set up water conservancy diversion subassembly 5 between the air outlet 13 in wind channel 11 and motor 4, realize the effect of drainage, concentrate the air that 3 windwheels thrown away to the middle part of air outlet 13, avoid the phenomenon of streaming to take place to reduce the loss of the amount of wind, and guarantee that the velocity of flow of air distributes evenly, further promote user experience.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims (10)

1. The utility model provides a novel air purifier, is including the casing that has the wind channel to and filter core, wind wheel and the motor that sets gradually along air intake to the air outlet in wind channel, its characterized in that: the wind wheel comprises a rear end plate matched with a driving shaft of the motor, a circular front end plate and a plurality of fan blades which are arranged between the rear end plate and the front end plate at equal intervals; the central opening of the front end plate is provided with an airflow inlet of the wind wheel, and an airflow outlet of the wind wheel is arranged between the outer edge of the front end plate and the outer edge of the rear end plate; setting the outer diameter of the rear end plate 31 to D1, the outer diameter of the front end plate 32 to D2, D2 smaller than D1, and 0.88 < D
Figure DEST_PATH_IMAGE001
＜0.92。
2. The novel air purifier of claim 1, wherein: the outer end of the fan blade is designed in two sections and comprises a first outer edge and a second outer edge, the first outer edge is connected with the outer edge of the rear end plate, the second outer edge is connected with the outer edge of the front end plate, and an arc outer edge is connected between the first outer edge and the second outer edge.
3. The novel air purifier of claim 1, wherein: the wind outlet angle of the fan blades is 60-68 degrees, the wind inlet angle of the fan blades is 58-64 degrees, the extension angle of the fan blades is 54-64 degrees, and the number of the fan blades is 9-11; the wind outlet angle of the fan blade is the included angle between the outer edge tangent line of the fan blade and the diameter of the wind wheel passing through the tangent point of the outer edge tangent line, the wind inlet angle is the included angle between the inner edge tangent line of the fan blade and the diameter of the wind wheel passing through the tangent point of the inner edge tangent line, and the extension angle of the fan blade is the included angle between the radius of the wind wheel passing through the inner end of the fan blade and the outer end of the fan blade.
4. The novel air purifier of claim 3, wherein: the wind outlet angle of the fan blades is 64 degrees, the wind inlet angle of the fan blades is 62 degrees, the extension angle of the fan blades is 59 degrees, and the number of the fan blades is 9.
5. The novel air purifier of claim 1, wherein: in the radial direction of the wind wheel, a cambered surface is arranged between the outer end of the fan blade and the inner end of the wind wheel; in the axial direction of the wind wheel, the fan blades incline towards the outer edge direction of the rear end plate along the airflow inlet, and the inclined plane is a cambered surface.
6. The novel air purifier of claim 1, wherein: the middle part of the rear end plate is provided with a flow guide boss protruding towards the direction of the airflow inlet, and a flow guide inclined plane is formed between the outer edge of the flow guide boss and the outer edge of the rear end plate.
7. The novel air purifier of claim 1, wherein: and two ribs which clamp the fan blades in opposite directions are formed at the matching part of the rear end plate corresponding to the fan blades in a protruding manner.
8. The novel air purifier of claim 1, wherein: the air guide assembly is arranged in the air duct and is positioned between the air outlet and the motor; the guide assembly comprises an outer mounting seat, an inner mounting seat and a plurality of guide vanes which are arranged between the outer mounting seat and the inner mounting seat at equal intervals, the inner ends of the guide vanes are arranged on the periphery of the inner mounting seat, the outer ends of the guide vanes are arranged on the inner side of the outer mounting seat, and the outer mounting seat is arranged on the side wall of the air duct; the flow guide direction of the flow guide vanes is deflected from the outer side of the flow guide assembly to the inner side of the flow guide assembly.
9. The novel air purifier of claim 8, wherein: the width of the outer end of each guide vane is 18 mm-22 mm, the width of the inner end of each guide vane is 28 mm-32 mm, and the height of each guide vane is 37 mm-41 mm.
10. The novel air purifier of claim 8, wherein: the air inlet angle of the inner end of the guide vane is 60-70 degrees, and the air outlet angle of the inner end of the guide vane is 80-90 degrees; the air inlet angle of the outer end of the guide vane is 60-70 degrees, and the air outlet angle of the outer end of the guide vane is 80-90 degrees; the wind inlet angle of the inner end of the guide vane is an included angle between an inner edge tangent line of the inner end of the guide vane and a rotation axis of the wind wheel, the wind outlet angle of the inner end of the guide vane is an included angle between an outer edge tangent line of the inner end of the guide vane and a vertical plane of the rotation axis of the wind wheel, the wind inlet angle of the outer end of the guide vane is an included angle between an inner edge tangent line of the outer end of the guide vane and the rotation axis of the wind wheel, and the wind outlet angle of the outer end of the guide vane is an included angle between an outer edge tangent line of the outer end.
CN201921170176.6U 2019-07-24 2019-07-24 Novel air purifier Active CN210568923U (en)

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CN201921170176.6U CN210568923U (en) 2019-07-24 2019-07-24 Novel air purifier
US16/589,035 US20210025606A1 (en) 2019-07-24 2019-09-30 Air cleaner

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112762007A (en) * 2020-12-18 2021-05-07 厦门唯科健康产业有限公司 Design method of small centrifugal wind wheel of vehicle-mounted air purifier
CN115264719A (en) * 2021-04-29 2022-11-01 广东美的环境电器制造有限公司 Air treatment equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112762007A (en) * 2020-12-18 2021-05-07 厦门唯科健康产业有限公司 Design method of small centrifugal wind wheel of vehicle-mounted air purifier
CN115264719A (en) * 2021-04-29 2022-11-01 广东美的环境电器制造有限公司 Air treatment equipment
CN115264719B (en) * 2021-04-29 2024-04-12 广东美的环境电器制造有限公司 Air treatment device

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